Tandem draft-rigging for railway-cars.



J. F. OGONNOR. TANDBM DRAFT RIGGING ron RAILWAY GARS. APPLICATION FILEDJULY 24, 1911.

1,105,577- Patented July 28, 1914. 2 a /1 @Q /z @Q zontal section.

'UNITE STATES PATENT OFFICE.

JOHN F. OCONNOR, 0F CHICAGO, ILLINOIS, ASSIGNOR TO WILLIAM H. MINER, OF

CHICAGO,

ILLINOIS.

TANDEM DRAF.l.-RIGCrIl\T(:`r FOR RAILWAY-CARS.

T 0 all '1a/1 om. 'i' t may concern Be it known that I, JOHN F. OCONNOR,a citizen of the United States, vresiding in Chicago, in the county ofCook and State of Illinois, have invented a new and useful Improvementin Tandem Draft-Rigging for Railway-Cars, of which the following isaspecification.

My invention relates to improvements in tandem draft gearing for railwaycars.

'lhejobject of the invention is to provide a simplified constructionof'strueture of the type set forth, in which the tandem yoke member isremovably attached to the drawbar by means of a key, and in which theyoke is cast in a single piece having intermediate its ends a centerthimble for operating the intermediate front and rear followers,

My invention consists in the novel parts anddevices and in the novelcombinations of parts and devices herein shown, described and claimed.

IIn the drawings forming a part of this specification, Figure 1 is aside elevation, partly in longitudinal, vertical section, of a structureembodying my invention. Fig. 2 is a plan View of the same, partly inhori- Fig. 3 is a transverse section, taken on line 3-3 of Fig. l,looking in the direction of the arrow. Fig. 4 is a section of the yokemember, taken substantially midway between the rear end and the centerthimble.

In the drawings, the gearing is shown as mounted between the centersills 10, 10, provided with the stop plates 11, secured thereto byrivets 12, 12. These stop plates are each provided with the usual frontand rear stops 13 and 14, respectively, and the intermediate fro`nt andrear stops 15 and the middle stops 1G. The tandem draft rigging, asherein shown, is slidably mounted between the center sills 10 andretained therein by the saddle plate 17, removably secured to the sills10 by bolts 18. Mounted within the yoke are the end front and rearfollowers 19 and 20 and the intermediate followers 21 and 22. The usualtandem arranged draft sprin s 23 and 24 are mounted between each set o'follower plates, and within the draft springs are the restoring followersprings Specification of Letters Patent.

Application filed July 24,

Patented July 28, 1 91 1.

1911. Serial No. 640,078.

The yoke 27, which is cast in a single piece, is substantially channelshaped in cross section, having the outwardly extending flanges 28 andintermediate the ends of the yoke. is formed the hollow thimble 29,rectangular in cross section and adapted to operate the intermediatefollowers 21, 22.

preferably rectangularJ hollow head 30, within which is adapted totitloosely the correbar 31. This head 30 has its vertical sides 32extended forwardly, and said sides are tapered and each provided with aslot 33 for the reception of a removable key 34 by means of which thedraw-bar and the draft yoke are detachably connected together. Each ofthese sides 32 is further provided with a strengtheningr rib 35. The key34 passes through the center sills l0, which are provided with slots 36,thus adapting the key 34 to slide therein. The key l-l is prevented fromaccidental displacement by having formed thereon at one end an upturncdflange 37, and having at its other end a removable cotter pin 38.

By means of the structure herein disclosed the tandem yoke iscomparatively light .ncl made exceedingly strong by means of the channelstructure, and furthermore by having the intermediate thimble 29 formedintegral with the rest of the yoke. By means o the removable keyconnection between the draw-bar and the yoke, the draw-bar may heconveniently disconnected from the rigging without the necessityofremoving the yoke or the rest of the tandem mechanism.

As clearly shown in Fig. 2 of the drawing, the rear end of the draw barcontacts directly with the front-follower, so that in batting action,the yoke and the key connection between the draw bar and yoke will bematerially relieved'from shock, thereby insuring longer life to the yokeand key connections. By making the intermediate thimble 29 hollow andopen at each end, the entire yoke may be easily cast andwithout thenecessity for employing any unusual and expensive forms of cores.

I claimz- 1. In a tandem draft rigging, a draft yoke having a hollowrectangu ar end, rear end spondingly shaped inner end of the draw-v Thefront end of the yoke is provided with a' 60 piece and an intemeclntehollow thmble all and means for connecting salici yoke and integrallyformed, substantially as spececl. draw bar, substantially as specied.

2. In a tandemdraft rigging the combnation with a draw bar, of a yokehaving JOHN F O CUNNQR' 5 spaced arms, a rear end piece and an nter-Witnesses:

mediate hollow tlxmble, said thmble being PEARL ABRAMS,

formed integrally with the arms of the yoke, H. M. MUNDAY.

` Copies of this paient may 'be obtained for ve cents each, byaddressing the Connnissonexl of Patents,

. Washington, JD. G.

